Window construction



M A H G W E C E mwmm WINDOW CONSTRUCTION 4 Sheets-Sheet 1 Filed Jan. 16, 1935 JNVENTOR .EUGENE C. ENG-H4214:

ATTORNEYS Jan. 7, l 936. 5 B N 2,027,016

WINDOW CONSTRUCTION Filed Jan. 16, 1935 4 SheetsShee,t 2 75 W 27 27 i/76 I Hili'iim w g 9 z 15 INVENTOR.

EUGENE C ENG/1AM:

ATTORNEK'S Jan. 7, 1936.

E. c. BINGHAM WINDOW CONSTRUCTION Filed Jan. 16, 1935 4 Sheets-Sheet 3 INVENT OR.

EUGENE CEIVGHAM.

BYMM ATTORNEYS Jan. 7, 1936. c, B|NGHAM 2,027,016-

WINDOW CONSTRUCTION Filed Jan. 16, 1955 4 sheets-sheet 4 0" j I? "o 2V 50 INVENTOR.

117 UGEIVE CE/MGHA M.

BYWW

ATTORNEYS Patented Jan. 7, 1936 UNITED STATES PATENT OFFICE 9 Claims.

My invention relates to window construction and particularly to the mounting of windows in such a manner that when adjacent windows are raised, a clear unobstructed space is left below the adjacent windows or series of windows.

Heretofore, when windows have been mounted in frames the frame has extended throughout the height of the window so that there is a frame element between each pair of adjacent windows. When the windows are raised, these frame elements form a series of spacing posts separated by the width of the window sash. These posts form obstructions which are in many cases undesirable. For example, in hoods for laboratory desks a series of such posts separated only by the widths of the window interferes with the ease of manipulating or handling apparatus in the hood.

In my present invention, I provide a mounting construction for windows in which each window may be raised or lowered and guided, but which does not have any obstructing posts or guides below the lifted windows.

In my invention, each window sash is provided with upwardly extending guide arms, one at each side of the sash, which are guided in guides that extend upwardly from about the top of the window in its lowermost position. When the window is in its lowermost position, the upwardly extending guide arms engage the guides for a considerable distance above the window and hold it rigidly in place. As the windows are raised or lowered the guide arms slide .in the guides above the window space and serve to guide and hold the windows in position. The edges of the window sashes overlap the guides so that the adjacent edges of the windows will contact and thus form a continuous wall when all of the windows are lowered. When the windows are raised the lower edge of the windows are approximately even with the lowermost ends of the guides and the space below the windows is unobstructed. In case adjacent windows are at a right angle to form a corner, the guide construction avoids the necessity for a corner post below the raised windows.

The various features of the invention are illustrated in the accompanying drawings, in which:--

Fig. 1 is a perspective view of a laboratory desk or hood, having a window frame and sash construction embodying the invention; Fig. 2 is a front view of the hood shown in Fig. 1; Fig. 3 is a horizontal section taken on the line 33 of Fig, 2; Figs. l and 5 are respectively end elevations and vertical sections through the hood; Fig. 6 is a section on the line li6 of Fig. 4; Fig. 7 is a perspective view of another embodiment of the invention; Fig. 8 is a part plan view of the embodiment shown in Fig. 7; and 5 Fig. 9 is a vertical section taken on line 99 of Fig. 7. I

In the accompanying drawings, the invention is shown as applied to a laboratory hood having a desk I0 on the surface of which chemical or'lo other apparatus may be set up and manipulated and having an inclined roof or hood H. A flue I2 is provided at the back of the desk through which gases may be withdrawn and passed to an outlet l3 as indicated by the arrows in Fig. 5. A series of windows 14 are provided to close the front and sides of the space above the laboratory desk. These windows it are each provided at their side edges with upwardly projecting guide arms I5, which slide vertically in guides l6 supported by suitable framework ll above the top of the hood, attached in turn to wall or ceiling.

The side edges of the guides l6 are grooved as at I8 and I9,'Fig. 3, to receive guide elements or keys and 2! respectively, secured to the inner faces of the windows I4, so that the windows are guided securely by the guides it. The side edges of the windows It overlap the front faces of the guides I6 and abut the edges of jacent windows as indicated at 22, Fig. 3, so that when the windows are lowered below the lower ends of the guides I6, they form a substantially continuous, unbroken, partition.

If the guide I0 is arranged between a pair of windows 14 at right angles to form a corner, the inner faces of the guide it are grooved and the guide or tongues 20 and 2! of the guide arm, slide in the grooves of faces at right angles. The edges of the window sashes in such a corner construction extend over the full width of the outside faces and somewhat beyond, so that the edge of one window sash overlaps that of the other. The overlapping edge may be provided with a vertical groove 23' to receive a guiding feather 2 of the overlapped window and thus intericck these two windows when in their lowermost position to form a firm, closed corner construction.

The window sashes may be counter-weighted by means of sash weights 25 suspended from a cord 26 that passes over pulleys 21 in the supporting frame l1 and thence downwardly to the upper edges of their respective sashes.

In the embodiment illustrated in Fig. 7, a laboratory desk or table is shown, that is free on all sides, but which may be entirely enclosed by win- 55 dows mounted by my invention. In this embodiment, four guides 28 are provided one above each corner of the desk or table, and having grooves similar to those of the guide l6 shown in Fig. 6. The window sash in this construction is also provided with the tongue and groove construction shown in Fig. 6. Each of the guides 28 are additionally strengthened by a right angle shield 29 of metal secured at its upper end to the ceiling and extending downwardly to approximately the lower ends of the guides. The shields 29 are pressed at their lower ends by connecting bars or rods 30. In this embodiment the windows are counter-balanced by sash weights 3| at one side of the apparatus and connected to the sash weights by cords 32 drawn about guide pulleys 33.

While the invention has been described specifically for use on laboratory hoods or hooded spaces above a working desk or table, it may be used generally wherever it is desirable to maintain a clear space free from posts or obstructions.

What I claim is:--

1. A window comprising a sash having guide arms, one at each side thereof, projecting above the upper edge of the sash, a frame having guides projecting downwardly and terminating above the bottom of said window sash when the latter is in its lowermost position, said window sash and upwardly projecting guide arms overlapping the front surface of said frame guide and tongues mounted on said guide arms and said window sash extending into vertical grooves of said frame guide.

2. A window comprising a window sash, each having a pair of guide arms, one at each side thereof, projecting upwardly above the upper edge of the sash, guide posts extending downwardly to engage said guide arms in all positions of said window, said guide arms overlapping the front faces, of said posts, a pair of said sashes being arranged at right angles and having the edge of one of said windows overlapping the edge of the other.

3. A window comprising a pair of sashes arranged at a right angle and having the edge of one window grooved and the other tongued to engage said groove, a guide post within the angle of said windows and terminating above the window space and guide arms extending above the upper edges of said windows and having tongues engaging grooves in said posts.

4. A work table, guide posts extending downwardly and terminating above said table to form a free space thereon, window sash slidable be tween said guide posts and having upwardly extending guide arms to engage said guide when the windows are lowered below the lower ends thereof whereby said table may be unobstructed from all sides or may be entirely enclosed and hooded.

5. A work table, guide posts extending downwardly and terminating above said table to form a free space thereon, window sash slidable between said guide posts and having upwardly extending guide arms to engage said guide when the windows are lowered below the lower ends thereof whereby said table may be unobstructed from all sides or may be entirely enclosed and hooded, and counter-weights or springs for said windows.

6. A table, guide posts projecting downwardly and terminating above the surface of said table to form a clear space, window sash guided between said posts and having upwardly extending guide arms, said guide arms having tongues to engage grooves in said posts when said windows are lowered below the lower ends of said posts, said posts and windows being arranged to form a complete enclosure above said table or to leave said table unobstructed from all sides.

7. A table, guide posts projecting downwardly and terminating above the surface of said table to form a clear space, window sash guided between said posts and having upwardly extending guide arms, said guide arms having tongues to engage grooves in said posts when said windows are lowered below the lower ends of said posts, said posts and windows being arranged in rectangular formation with corner sash arranged at right angles and having their edges overlapping the corner posts and engaging in a tongue and groove engagement, whereby the surface of said table may be entirely enclosed or may be clear and unobstructed from all sides.

8. A table, guide posts projecting downwardly and terminating above the surface of said table to form a clear space, window sash guided between said posts and having upwardly extending guide arms, said guide arms having tongues to engage grooves in said posts when said windows are lowered below the lower ends of said posts, said posts and windows being arranged in rectangular formation with corner sash arranged at right angles and having their edges overlapping the corner posts and engaging in a tongue and groove engagement whereby the surface of said table may be entirely enclosed or may be clear and unobstructed from all sides, and corner plates covering the edges of said corner sash.

9. A table, guide posts projecting downwardly and terminating above the surface of said table to form a clear space, window sash guided between said posts and having upwardly extending guide arms, said guide arms having tongues to engage grooves in said posts when said windows are lowered below the lower ends of said posts, 

